EST EST3X - 4 X Series Control-Display Modules Troubleshooting

Chapter 7: Service and troubleshooting
EST3X Technical Reference Manual 177
Table 42: 3X-FIB8 troubleshooting
Problem
Possible causes
The
TX LED is not flashing
on
the transceiver
• The ribbon cable between the adapter card and electronics
card is improperly installed or defective
• The adapter card is not properly seated in J6 on the CPU
The
RX LED is not flashing
on
the transceiver
• An incorrect cable is connected to the port
• The fiber strand may be broken or missing
• There is lack of continuity between one panel and another
The
RX LED is steady on the
transceiver
• Jumper JP1 was left in the test position
Test jumpers
Jumper J2 on the electronics card is used to put the module in test mode. Refer
to the 3X-FIB8 Fiber Network Option Module Installation Sheet (P/N 3101769) or
3X-FIB Fiber Network Option Module Installation Sheet (P/N 3101971) for testing
instructions.
4X Series control-display modules troubleshooting
The 4X Series control-display modules operate independently of the option card
on which they are installed; however, they use the option card’s electronics to
communicate with the SFS1-CPU.
Performing a lamp test will quickly isolate hardware problems from programming
problems with any control-display module. See “Performing a lamp test” on
page 60.
Table 43: Control-display module troubleshooting
Problem
Possible cause
The
LEDs, buttons, and host
option card are inoperative
• There is no power to the panel
• The ribbon cable between the control-display module and
the host option card is loose or defective
• The control-display is defective
• The host module is defective
The
LEDs and buttons are
inoperative but the host option
card is working correctly
• The ribbon cable between the control-display and host
option card is loose or defective
• The control-display is not defined in the 3-SDU
• The control-display is defective